*{
    margin: 0;
    padding: 0;
}
ul li{
    list-style: none;
}
.head {
    height: 80px;
    font-size: 0;
    padding: 0 127px;
    display: flex;
    /* border-bottom: 1px solid #b6b6b6; */
    box-shadow: 0 1px 3px 0px rgba(0, 0, 0,0.1);
}
.head_nav,.head_user{
    display: inline-block;
    width: 50%;
    font-size: 16px;
}

.head_nav{
    height: 100%;
    display: flex;
    align-items: center;

}
.logo,.nav{
    display: inline-block;
}
.nav ul{
    display:flex;

}
.logo{
    width: 73px;
    height: 57px;
    overflow: hidden;
}
.logo img{
    width: 100%;
}
.nav ul li{
    margin-left: 57px;

}
.head_user{
    display: flex;
    justify-content: flex-end;
    align-items: center;
}
.login{
    width: 70px;
    height: 45px;
    border-radius: 7px 7px 7px 7px;
    font-size: 16px;
    color: #4B5563;
    border: none;
}
.register{
    width: 70px;
    height: 45px;
    color: aliceblue;
    background: #000000;
    border-radius: 7px 7px 7px 7px;
    font-size: 16px;
    border: none;
}

/* main */
.main{
    padding-top: 40px;
}
.search{
    background-color: #fff;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0,0.1);
}
.search_info{
    width: 1013px;
    height: 66px;
    margin: 0 auto;
    position: relative;
}
.search_info input{
    width: 100%;
    height: 100%;
    border-color: #D1D5DB;
    border-radius: 11px;
    font-size: 24px;
    padding-right: 60px;
    padding-left: 60px;
    box-sizing: border-box;
}
.seaech_icon{
    position: absolute;
    left: 21px;
    top: 19px;
}
.search_btn{
    width: 60px;
    height: 40px;
    position: absolute;
    right: 30px;
    top: 14px;
    font-size: 14px;
    color: aliceblue;
    background: #000000;
    /* 1. padding-left: 20px; */
    /* padding-top: 5px; */
    /* 2. display: flex;
    justify-content: center;
    align-items: center; */
    text-align: center;
    line-height: 40px;
    /* border-radius: 7px 7px 7px 7px; */
}